Recipe:
Soak white rice, black gram seeds, yellow lentils, bengal gram seeds together in water for about 4- 5 hrs. Wash the soaked ingredients 2-3 times in water and keep it aside. Put red chillies, coriander seeds, cumin seeds, mustard seeds, fenugreek seeds, dried turmeric, 1 tsp oil in a pan and fry. Once it starts giving nice aroma, add asafetida powder and fry them together for few seconds.

Chop the colocasia leaves and onion into small pieces as shown in the picture below.

Grind soaked rice along with fried masala, tamarind, jaggary, grated coconut, salt into medium smooth paste by adding required amount of water. The consistency of the batter should be like that of milkshake. Add the chopped colocasia leaves, onion to the vessel containing rice batter and mix them well.

Heat the Tava(Iron Tava preferred). Pour a spoonful of batter at the centre, spread it with the back of the flat spoon as shown in the picture below. Add 1 tsp of oil/ghee on top of dosa, cover it in a lid and cook it for a minute in medium flame.

Cook other side of the dosa as well for about 2 - 3 mins in medium flame.

Serve hot with any chutney or sambar. The ingredients mentioned above will serve around 12 - 15 dosas.